Method for the elimination of wasteful discarding or throwing aside of defective metal castings.



losses due to a lar. e percentage fof the castings heilig imper ect to such a degree as to necessitate their being discarded and laid aside, and afterward 'renielted for subsefquent recasting.

Having thus fully described the invention,'what is claimed, is :f-

1. The method .of making usable defective castings, which consists in cleaning out the pores therein, subjecting the walls of the pores to the action of an acid, and applying a fiux thereto, filling the pores with a metallic substance, subjecting the filling to the action of localized heat, subjecting the filling, while in.heated condition, to pressure and rubbing the saine into a homogeneous state, and finally scraping away the surplus of the filling and reducing the latter to conform to the contour of the finished surface of the castin 2. The method making usable defective castings, which consists in cleaning, out the pores'tlierein, subjecting the walls of the pores to the action of an acid, and applying a flux thereto, filling the pores with a. metallic compound, subjecting the filling to the action of an arc or spot flame, subjecting the filling, while in fused state, to pressure and rubbing the same into a homogeneous state, and finally scraping away the surplus of the filling and reducing the latter to conform to the contour of the-'finished surface of the casting.

In testimony whereof I affixmy signature.

LEONARD LORENTOl-i-'lCZ 

